Boring and milling machine



G. F. KRIESEL.

y BORING AND MILLING MACHINE. APPLICATION FIVLED APB. 24.1918. BENEWED SEPT. l0. 192|.

1,415,878. Patented May'16,1922.

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BORiNG AND MILLING MACHINE.

APPLICATION FILED Anz/4,1918. RENewED SEPT. 1o.` 1921. 1,415,878.

UNITED STATES PATENT OFFICE.- i

GUSTAVE F. KRIESEL; MINNEAPOLIS, MINNESOTA, ASSIGNOR, `BY MESNEf ASSIGN- MENTS, T ESTHERV. SAFSTROM,iGIFMINNEAPOLIS, MINNESOTLAL.

`BOlRJlNGr AND MILLING MACHINE.

Specification of Letters Patent. Itntgd JyIay 16, 1922 Application 1ed.Apri1\-\24, 1918, Serial No. 230,412. Renewed September 1.0, 1921. Serial No. 499,863.

T0 ZZ who/m, t may concern.'

Be it known that l, Gusrnvn F. Knrnsnr., a citizen of the United States, resident `ofMinneapolis, county" of Hennepin, State of Min nesota, have invented certain new and use ful Improvements in Boring and .Milling Machines, of which the followingI is a speciiication.' y

The object of my invention is to provide an improvement in the machine shown and described in applicatirm for` Letters Patent of the `United States `filed 1917, Serial No. 167,819.

The invention consists generally in `various constructions and combinations, all as herein`- after described and particularly pointed out in the claims.

In the accompanying drawings forming part of this specification,

Figure 1 is a plan view of a boring and milling` machine embodying my invention,

Figure 2 is a vertical sectional view of the same, H y

Figure@ is an end view,

Figure 4; is a detail sectional view, showing the feed gearing,

Figure 5 is a transverse sectional View of the feed mechanism,

Figure 6 is a sectional View, showing a means for locking the shaft for a milling tool,

Figure 7 is a 7-f7 of Figure 4,

Figure 8 is adetail sectional view of the feed mechanism,

Figurei) is a detail sectional view of the means for changing the direction of movement of the feed shaft,

y Figure 10 a detail view showing one of the bars by means of which the work is clamped to the supporting plate,

.Figure 1 1 is a sectional view on the line 11-11 of Figure 10,`

Figure 12 is a sectional view on the line 1 2--12 of Figure 10.

In `the drawing, 2 represents the base of the machine, having a horizontally project ing bracket 3 at the rear thereof. et a sha-ft having a key-way 5 therein and 6 isa sleeve having a key fitting said key-way and provided at oneend with a gear 7. A bearing for said sleeve is provided in the bracket A sleeve 8 is mounted in bearings in the up per part of the base and through this sleeve sectional view on the line by me May 10,V

rlhis device, however, forms the subject 1nat-V ter of 'a separate application and I make no claim to the same herein.-

The end of the base 2 is provided with an upright plate 12 having an opening 13`therein through which the sleeve 9 projects` for the purpose of presenting the tool in position to work on the interior surface of a cylinder or other piece of work, which may be secured to the plate 12 over the opening 13, as described in my former application. 14 is a step pulley mounted on a drive shaft 15 that is geared at 16 to a shaft at 17 mounted in bearings in the base and the bracket- 3 and having a pinion 18`1neshing with the gear 7 for revolving the shaft 5 within the sleeve 8. A shaft 19 is mounted in bearings 20 on said base and has a gear 21 thereon meshing with a gear 22 secured to the sheave` 6 of the gear 7 and driven thereby and provided with a loosely mounted worm` 2? which meshes with a worm wheel 24 that is loosely mounted on a shaft 25 having a pinion 2G engaging the teeth of a rack 27 on the sleeve 8. The worm wheel 24 has a seat 26 formed therein for a friction clutch member 27 that is mounted to slide on the shaft 25 and normally held out of engagement with said seat by a spring 28. A hand wheel 29 engages the threads of the, shaft 25 for seating the clutch member 27 and temporarilylocking the worm wheel on its shaft. The worm 23 has a clutch member 30 by means of which it is locked on the shaft 19 and a clutch shifter rod 31 has a fork engaging the clutch and is free to slide in guides on the machine frame and the sleeve 8 has a block 32 that is movable back and forth on the rod 31 and a collar 33 is adjustable on said rod in the path of said block to be actuated thereby for throwing out the clutch 30 at a predetermined pointin the movement of the sleeve u and y shaft. This clutch may be operated by hand vsaid gear 22 also meshes with a gear 21. A

into mesh with the gear 40, and thereupon gear 40 is mounted on the shaft 39 and when it is desired to reverse the direction of movement of the worm the gear 21 is moved from its position of engagement with the gear 22 the direction of revolution of the shaft 19 will be reversed. The shaft 34 is provided with a slot 41 and notches 42 leading thereto and a pin 43 is mounted in the bearing 36 to enter these notches and lock the shaft 34 in its different adjustments. In theJ position shown in Figure 9, it is in engagement with the gear 22. When the shaft 34 is moved lengthwise to enter the pin 43 in the notch at the other end of the slot, the gear 21 will i ythen engagel the gear 40 and in the inter mediatefnotchthe gear 21 will be in a neutral position between the pinion 36 and the gear 40. At such time, if the clutch 30 is iwithdrawn, the worm 23 will be loose on theshaft and may turn freely thereon and the operator may regulate the feed by hand by meansof a crank placed on the squared end 44 of the shaft 25. In this way I am able to feed and retract the sleeve and the shaftfsupporting'the tool holder and I may do, fthis automatically orrmanually, as desired. j

The upper `'part of the base has bearings -45 for a shaft indicated by dotted lines in Figure 2 for supporting` a milling tool, said shaft projecting through an opening 46 provided in the upper part of the plate 12.

This shaft may belocked by suitable means,

preferably a stud 47 having a recess 48 to :receive the curved surface of the shaft and having a threaded end on which a lever 49 is mounted for moving the stud lengthwise and clamping the walls of its recess against the surface of the shaft. A similar locking means may be provided for the sleeve 8. as indicated in Figure 2.

VTheJ plate 12 has work holders mounted thereon, consisting of bars 50, radially movable in guides 51 in said plate. These jaws are dovetailed. to fit the correspondingly shaped walls of the guides 51 and are adapted to project into the opening 13 in the plate l2 and when the machine is used for cylinder -l boring or finishing, an annular flange 52 on the cylinder 53 will be gripped between these jaws, and plates 54 mounted on bolts 55 and having slots 56 for adjust-ment on said bolts. The bolts pass through holes in ferent radial adjustments.

the plate 12 and are tapped into plates 5G which have slots 57 therein to receive bolts 58 on which said plates are adjustable when the bolt nut is loosened and the head of the boit 58 has a beveled face 59 to bear on the edge of the jaw 50 for locking it in its dif- Suitablc graduations are provided on the aws to enable the workman to determine the proper degree of adjustment of the different jaws.

A bracket 60 is vertically adjustable in front of the table by means of an upright screw 61 and a shaft 62 geared thereto and on this bracket a work tableJ 63 is mounted for adjustment transversely of the feed shaft, or lengthwise thereof, as may be desired by means of the usual adjusting screws 64.

I claim as my invention 1. The combination, with a frame having an orifice and a surface around said orifice against which the piece of work is clamped, of a reciprocating' member mounted in said frame for forward and backward movement with respect to said orifice, a tool-supportingr shaft fitting within said member to more forward and backwardv therewith and re volve therein, a drive shaft, a transmission shaft geared to said drive shaft and said tool-supporting shaft, and a second trans mission shaft having a driving connection with said tool-supporting shaft and with said reciprocating member.

2. The combination, with a frame havingr an orifice and a surface around said orifice against which the piece of work is clamped, of a reciprocating member mounted in said frame for forward and backward movement with respect to said orifice, a tool-supporting shaft fitting wit-hin said member to move forward and backward therewith and revolve therein, a drive shaft, and a transmission shaft geared to said drive shaft and having a forward and reverse driving connection with said tool-supporting shaft.

3. The combination, with a frame having an orifice and a surface around said orifice against which the piece of work is clamped` of a reciprocating member mounted in said frame for forward and backward movement with respect to said orifice, a tool-supporting` shaft fitting within said member to move forward and backward therewith and revolve therein, a drive shaft, a. transmission shaft geared to said drive shaft and toolsupporting shaft and having forward. and reverse driving connections with said reciprocating member.

4. The combination, with a frana?, of a plate secured thereto and having an opening therein, a sleeve mounted in said frame to project into said opening, a shaft within said sleeve having a tool carrier, means for clamping the work, such as a cylinder casting, against said plate and encircling the fifi lUfi

opening therein, means for feeding said sleeve and shaft through said opening and revolving` said shaft, and means for automatically checking said feeding movement at a fin'edetermined point in the movement of said sleeve.

ll'he combination, with a frame `having a .tane plate jin'ovidml with an opening thereimot a sleeve mounted in bearing" in said t'ii'ame to project through said opening, a shaft carried by said sleeve and having moans toi-su pportiug a boring tool, said flaco plate having' means for securing a piece oi worli; to be bored against its face and encircling said opening, mechanism lor toed- :ing said sleeve and shaft and revolving said shalt within said sleeve and for reversing the direction oit movement ol said sleeve and shaft.

(i.` The combination, with a frame having a ilace plate thereon with an opening therein and radial giijooves provided in said plate, around said opening, aws mounted to slide in said grooves and having slots therein, bolts passing through said slots and through openings in the bottoms of said grooves and plates adjustable on said bolts and between which and said jaws the work is clamped against said tace plate and encirclingthe ojfiening therein, and a boring tool support-- ing shalt ojgierating through said opening.

7. The combination, with a :tace plate having an opening therein and radial grooves around said opening jgirovided with slots in the bottoms thereoi, ol jaw plates having slots therein and slidable in said grooves, bolts 'fitting within the slots in said jaw plates and having' clamping' j ilates on one end thereof between which` and said jaw plates the work is gripped, and adjust` able plates mounted on the other end oi said bolts for engagement with the opposite side oit said face plate and a boring tool support ing means operating through the opening in said :tace plate.

S. The combination, with a ilaoe plate having an opening' therein and radial grooves around said opening provided with slots in the bottom thereof, jaws slidable in said grooves and having slots therein, bolts paso ing through the slots in said jaws, and clampingplates carried by said bolts between which. and. said jaws the work is gripped, bolts having heads for locking said. clamping jaws in their adjusted positions and plates mounted on said first named bolts and having slots therein to reifeive said jaw clamping bolt-s Al'or adjustment thereon with the movement oi' said Afirst named bolts, and a boring tool supporting means operating through the openingr in said plate.

l). The combination, with a frame having a 'laoe plate provided with an opening therein, ol. a member mounted in bearings in said 'trarne and means for feeding it toward and from said opening, a shalt il by said membV and having n ans for supporting a tool, inea lor revolving said shalt independentlv ol ns forward Yfeeding movement with said sleeve and means for claniijiii'lg the wort: on said plate around said openingl the tool carried by said shatt pro jccting into and operating tl'iroiarh the opera :ingr in said plate.

l0. The combinatioin witlfi u `frame havingl a :tace plate thereon jjirovided with an open-- inn; and radial grooves in said plate around said opening, jaws mounted to slide in said grooves, bolts mounted in said jaws and 'lit ting openings in the bottoms oi' said ginoves, plates adjustable on said bolts and between which and said jaws the worlr cli' npr-d against said 'tace plate, and a tool su pporting shaft operating?,- through the opening in said Atace plate.

il. The combination, with a lace plate havingl an opening therein and radial grooves around said opening, and sioin the bottom ol said `grooves, oi ja .i plate dable 1n said grooves, bolts mounted Afor adjustment in said jaw plates and having clampingl plates between which and said aw plates the w i is gripjiied and means inoiuited on said bolts :for engagement with the opposite side oil said tace plate, and a tool supporting nie operating through the openingl in said Al plate.

l2. The combination, with a iframe havingl an oriliceand a surilii'ice around said orifice against which the piece of .vork is clamped, ol a reciprocating member mounted in said trame lor toi'ward and backward movement with respect to said orifice, a tool-supporting shaft fitting 'within said member to move torward and backward therewith and revolve therein, a drive sha't't, a transmission shaft geared to said drive shaft and said tool-- supporting shaft and having :forward and reverse drivingl connections with said toolsupporting shaft and said reciprocating member. i

13. The combination, with a traine having an orifice and a surface around said orifice against which the piece of work is clamped, of a reciprocating member mounted in said traine For toii'ward and backward movement with respect to said orilice, a tool-supporting shaft litting within said member to move 'forward and backward therewith and revolve therein, a drive shat't,` a transmission shaitt geared to said drive shaitt and said tool-suporting shalitand having forward and reverse driving connections with said tool-supporting sha'lt and said reciprocating member, the Connections with said reciprocating member permitting; it to be operated by power or manually.

14. The combination, with a iti-ame having an orifice and a surface around said orifice against which the piece of work is clamped,

fi t) llt) ot a recii'orocating` member mounted in said with respect to said orifice7 a tool-supporting shaft ifitting within said member to move forward and backward therewith and revolve therein7 a drive shaft, a transmission shaft geared to said drive shaft and having a forward and reverse driving connection with said tooi-sui'iporting shaft, a second transmission shaft7 a worm loosely mounted thereon, a clutch for loclring said worm, a worm wheel engaging said worin and having a driving connection with said reciprocating member, and means for locking or releasing said worm` wheel.

l5. The combination, with a frame having an orifice and a surta-ce around the orifice against which the pi ce ot work is clamped, ot' a reciprocating meml'ier mounted in said trame for forward and backward movement with respect to said orificea a tool-supporting shaft having bearings in said member to move forward and backward therewith and revolve therein, a drive shaft, a transmission shaft geared to said drive shaft and to said tool supporting` sha-ft, a second transmission shaft having a driving connecting with said tool-supporting shaftj a transverse shaft having racl and pinion driving connection with said reciprocating member, a worm mounted on said second transmission shaft, a worm wheel loosely mounted on said transverse shaft and engaging said worm and means for locking said worm wheel to reirame to forward and backward movement.

volve transverse shaft or releasing said worin wheel to allow it to run idle and said transverse shaft to be operated manually.

1G. The combination, with a traine having an orifice therein and a surtace around said orifice against which a piece ot work to be bored is clamped, of a sleeve mounted to reciprocate in said trame, forward and backward with respect to said orifice, a shaft mounted in said sleeve and having means Yfor supporting a tool to engage the work through said orifice7 means for revolving said shaft in said sleeve, and means tor locking said sleeve against toi-ward and backward movement.

i7. Tae combination, with ay frame having an orifice therein and a surface around raid orifice against which a piece oli work to be boi d is clampedg et a sleeve mounted to reciprocate in said traine, forward and backward with respect to said orifice, a shaft mounted in said sleeve and having means tor supporting' a tool to engage the work through lslid orifice, means :tor revolving said shaft in said sleeve and means for locking said sleeve against forward and bzurlrward 1nove- ,lente said means including a stud having a recess ther-cinto lit the surface ot said sleeve and means for moving said stud lengthwise to engage the wall ot said recess with the surface of said sleeve.

lu witness whereof, l have hereunto set my hand this 27th dayT of March, 1918.

GUSTAVE F. KRIESEL. 

